Oligacanthorhynchus microcephala (Rudolphi, 1819) Schmidt, 1972

(syn. Hamanniella microcephala (Rudolphi, 1819))

Mammalia Didelphis albiventris Lund ( Didelphimorphia, Didelphidae). SI: anterior and middle intestine. SD: adult. L: Formosa Province; Chaco Province; Santiago del Estero Province: Moreno (27º12’30’’S, 63º02’30’’W); Corrientes Province. R: Navone and Suriano (1992), Fugassa (2015).